I like the idea but am also fairly certain the safe havens from the flood won't be limited to the ones the WG has planned in their final designs.
There is this bit in Vegapunk's speech where he strongly encourages and expresses his belief in mankind's ability to stand up for themselves when the calamity hits:
The panels focus on Caesar and Judge, two of the greatest scientists after Punk himself, Iceburg, an engineer whose life long project has been about preserving his city from the floods of the Aqua Laguna, and the researchers from Weatheria, who live safely on top a sky island. Punk's own Island Cloud machine is focused on in the last panel and it was one of the only things in Egghead he absolutely
wanted to preserve specifically for humanity's future survival.
All of them will come into play in one way or another to prevent or lessen the impact of the disastrous war over safe ground Dragon is predicting in the latest chapter.